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EP2211734A1 - Instrument de chirurgie oculaire - Google Patents

Instrument de chirurgie oculaire

Info

Publication number
EP2211734A1
EP2211734A1 EP08848091A EP08848091A EP2211734A1 EP 2211734 A1 EP2211734 A1 EP 2211734A1 EP 08848091 A EP08848091 A EP 08848091A EP 08848091 A EP08848091 A EP 08848091A EP 2211734 A1 EP2211734 A1 EP 2211734A1
Authority
EP
European Patent Office
Prior art keywords
surgical instrument
core
eye surgical
instrument according
transmission mechanism
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn
Application number
EP08848091A
Other languages
German (de)
English (en)
Inventor
Gerrit Jan Vijfvinkel
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Dutch Ophthalmic Research Center International BV
Original Assignee
Dutch Ophthalmic Research Center International BV
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Dutch Ophthalmic Research Center International BV filed Critical Dutch Ophthalmic Research Center International BV
Publication of EP2211734A1 publication Critical patent/EP2211734A1/fr
Withdrawn legal-status Critical Current

Links

Classifications

    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B17/00—Surgical instruments, devices or methods
    • A61B17/30—Surgical pincettes, i.e. surgical tweezers without pivotal connections
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B17/00—Surgical instruments, devices or methods
    • A61B17/28—Surgical forceps
    • A61B17/29—Forceps for use in minimally invasive surgery
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B17/00—Surgical instruments, devices or methods
    • A61B17/28—Surgical forceps
    • A61B17/29—Forceps for use in minimally invasive surgery
    • A61B17/2909—Handles
    • A61B2017/2912—Handles transmission of forces to actuating rod or piston
    • A61B2017/2913—Handles transmission of forces to actuating rod or piston cams or guiding means
    • A61B2017/2915—Handles transmission of forces to actuating rod or piston cams or guiding means arcuate shaped guiding means
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B17/00—Surgical instruments, devices or methods
    • A61B17/30—Surgical pincettes, i.e. surgical tweezers without pivotal connections
    • A61B2017/305—Tweezer like handles with tubular extensions, inner slidable actuating members and distal tools, e.g. microsurgical instruments
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
    • A61F9/00—Methods or devices for treatment of the eyes; Devices for putting in contact-lenses; Devices to correct squinting; Apparatus to guide the blind; Protective devices for the eyes, carried on the body or in the hand
    • A61F9/007—Methods or devices for eye surgery
    • A61F9/00736—Instruments for removal of intra-ocular material or intra-ocular injection, e.g. cataract instruments

Definitions

  • the invention relates to an eye surgical instrument comprising an elongate core which carries an elongate tool element, operating arms extending along the core, operable against the force of a spring, which are pivotably attached to the core, and a hollow needle translatably included around the elongate tool element, an end of the hollow needle cooperating with a head of the tool element, while the hollow needle is coupled with the operating arms via a transmission mechanism.
  • Such an eye surgical instrument is well known and is used, for instance, with a substantially elongate tool element designed as pair of tweezers.
  • Such an eye surgical instrument is generally designed as an instrument for single use.
  • US 4 955 887 describes an eye surgical instrument with two operating arms which extend along an elongate core. The two operating arms are coupled at one end with a spring clip.
  • US 6 322 578 describes a microsurgical instrument provided with two operating arms which extend along an elongate core. Situated between the ends of the operating arms is a clip-shaped spring.
  • US 6 306 155 describes a surgical instrument which has a handle with two spring-biased operating elements.
  • a drawback of such known eye surgical instruments is that they contain relatively many parts and have a complex makeup. Moreover, it is difficult for a physician who operates such an instrument to operate the instrument in a precise manner.
  • An object of the invention is to provide an eye surgical instrument that is less complex and can be operated more precisely.
  • an eye surgical instrument comprising an elongate core which carries an elongate tool element, operating arms extending along the core, operable against the force of a spring, which are pivotably attached to the core, and a hollow needle translatably included around the elongate tool element, an end of the hollow needle cooperating with a head of the tool element, while the hollow needle is coupled with the operating arms via a transmission mechanism, while the spring force is supplied by a single leaf spring which is active between the operating arms, the leaf spring running through the core.
  • the eye surgical instrument can be made of relatively simple design. Also, by the use of a single leaf spring the force experienced by the physician during operation of the instrument can be approximately constant over a particular range. This can facilitate operating the instrument, allowing the physician to obtain a better feel of the instrument. As the leaf spring runs through the core, the instrument can be made of relatively compact design, with few parts, and the instrument can be assembled in a simple manner, so that it may be- relatively inexpensive.
  • the leaf spring as a metal leaf spring
  • the advantage can be achieved that the force experienced by the physician can be more constant over a particular range during operation of the instrument.
  • the transmission mechanism and/or the core and/or the operating arms as an injection molded part, the instrument can be manufactured relatively inexpensively. Consequently, the instrument may be advantageously used as a disposable instrument for single use.
  • the transmission mechanism can be made of relatively simple and compact design by providing a hollow sleeve to which two movable arms are coupled through a pivoting connection.
  • the hollow sleeve cooperates with an end of the hollow needle, for instance the hollow sleeve surrounds the hollow needle, e.g. through a clamped joint, snap connection or welded joint.
  • the pivoting connection can comprise a hinge joint.
  • the hinge joint comprises a co-injection molded line hinge.
  • the operating arms can be connected with the core in a simple and compact manner, while the connecting part at the same time functions as pivoting point for the operating arms.
  • Fig. 1 shows an exploded perspective view of an eye surgical instrument according to the invention
  • Fig. 2 shows a sectional side elevation of the eye surgical instrument of Fig. 1 in a rest condition
  • Fig. 3 shows a sectional side elevation of the eye surgical instrument of Fig. 1 in operating condition.
  • Fig. 1 shows an exploded perspective view of an eye surgical instrument 1.
  • the instrument 1 comprises a core 2 along which extend two operating arms 3.
  • the operating arms 3 are pivotably attached to the core 2 via a connecting part 4.
  • the operating arms 3 are operable by a physician against the force of a spring 5.
  • the operating arms 3 can be attached to the core 2 in a simple manner, while the connecting part 4 can further function as pivoting point for the operating arms 3.
  • the connecting part 4 is connected with the core 2 and/or the operating arms 3 through a snap connection.
  • Fig. 1 the transmission mechanism 6 is shown which is provided with a hollow needle 7. Included in the hollow needle 7 is an elongate tool element 8. In assembled condition as can be seen in Fig. 2 and Fig. 3 the elongate tool element 8 is secured to the core 2 through locking means 9. To that end, the core 2 is provided with at least one opening 10 for receiving the locking means 9.
  • the locking means 9 are designed as a screw. Possibly, the elongate tool element 8 may also be secured through a glued joint or by a combination of a screw on one side of the core 2 and a glued joint on the other side of the core 2.
  • the transmission mechanism 6 is provided with two movable arms 11 which can cooperate with means of the operating arms 3 of the instrument 1.
  • the operating arms 3 are provided with projections 12 for cooperation with the arms 11 of the transmission mechanism 6.
  • the hollow needle 7 is fixedly connected with the transmission mechanism 6.
  • the transmission mechanism 6 comprises in this exemplary embodiment a hollow sleeve 14 which cooperates with an end of the hollow needle 7.
  • the hollow sleeve 14 may be simply slid over the hollow needle 7 during assembly. Through, for instance, a clamped joint, the hollow sleeve 14 may be for instance fixedly connected with the hollow needle 7.
  • the transmission mechanism 6 can be simply manufactured as an injection molded part.
  • the transmission mechanism 6 may also be used in other surgical instruments as a part.
  • Fig. 2 the eye surgical instrument 1 is shown in rest condition.
  • the operating arms 3 are here designed as operating shells which surround the core 2 at least partly.
  • the operating shells 3 can be operated against the force of the spring 5.
  • the spring 5 is designed as a leaf spring.
  • the leaf spring is designed as a metal leaf spring.
  • the leaf spring 5 is connected at each end through a snap connection with an operating shell 3.
  • the leaf spring 5 runs through the core 2. In this way, the instrument 1 can be made of compact design.
  • the two movable arms 11 of the transmission mechanism 6 are moved towards each other.
  • the transmission mechanism 6 moves towards the front end of the instrument 1, where the hollow needle 7 and the elongate tool element 8 are situated.
  • the hollow needle 7 is fixedly connected with the transmission mechanism 6, the hollow needle 7 moves along forwards over the elongate tool element 8.
  • the elongate tool element 8 is operated.
  • Fig. 3 shows the operating position of the instrument 1 when both operating arms 3 have been operated.
  • the elongate tool element 8 may be designed as a pair of tweezers. By operating the operating arms 3, the two legs of the pair of tweezers may be opened, or closed for instance to pick something up. Also, the elongate tool element 8 may for instance be designed as a forceps, whereby through operation of the operating arms 3 the jaws of the forceps may be opened, or closed.
  • the operating arms 3, the core 2, the transmission mechanism 6 and the connecting part 4 are designed as injection molded parts. In this way, the instrument 1 can be manufactured in an inexpensive manner and it is easily deployable as a disposable instrument for single use.
  • the movable arms 11 are connected with the transmission mechanism 6 through line hinges 13.
  • the line hinges 13 are co-injection molded.
  • the transmission mechanism 6 with the movable arms 11 can then be manufactured as one whole by injection molding.

Landscapes

  • Health & Medical Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Surgery (AREA)
  • Heart & Thoracic Surgery (AREA)
  • Engineering & Computer Science (AREA)
  • Biomedical Technology (AREA)
  • Nuclear Medicine, Radiotherapy & Molecular Imaging (AREA)
  • Medical Informatics (AREA)
  • Molecular Biology (AREA)
  • Animal Behavior & Ethology (AREA)
  • General Health & Medical Sciences (AREA)
  • Public Health (AREA)
  • Veterinary Medicine (AREA)
  • Infusion, Injection, And Reservoir Apparatuses (AREA)
  • Surgical Instruments (AREA)

Abstract

L'invention porte sur un instrument de chirurgie oculaire qui comporte une âme allongée portant un élément outil allongé, des bras d'actionnement s'étendant le long de l'âme, pouvant agir contre la force d'un ressort et qui sont fixés pivotants à l'âme, et une aiguille creuse montée pour effectuer un mouvement de translation autour de l'élément outil allongé, une extrémité de l'aiguille creuse coopérant avec une tête de l'élément outil. L'aiguille creuse est couplée aux bras d'actionnement par l'intermédiaire d'un mécanisme de transmission, alors que la force de rappel est distribuée par un seul ressort à lame.
EP08848091A 2007-11-08 2008-11-07 Instrument de chirurgie oculaire Withdrawn EP2211734A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
NL1034657A NL1034657C2 (nl) 2007-11-08 2007-11-08 Oogchirurgisch instrument.
PCT/NL2008/050706 WO2009061194A1 (fr) 2007-11-08 2008-11-07 Instrument de chirurgie oculaire

Publications (1)

Publication Number Publication Date
EP2211734A1 true EP2211734A1 (fr) 2010-08-04

Family

ID=39563320

Family Applications (1)

Application Number Title Priority Date Filing Date
EP08848091A Withdrawn EP2211734A1 (fr) 2007-11-08 2008-11-07 Instrument de chirurgie oculaire

Country Status (3)

Country Link
EP (1) EP2211734A1 (fr)
NL (1) NL1034657C2 (fr)
WO (1) WO2009061194A1 (fr)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AU2012315978B2 (en) 2011-09-27 2017-04-06 Edwin RYAN Small gauge surgical instrument with adjustable support
US9827141B2 (en) 2013-06-21 2017-11-28 Novartis Ag Systems and techniques for tissue manipulation during ocular surgery

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4506669A (en) * 1982-09-22 1985-03-26 Blake Joseph W Iii Skin approximator
DE3816059A1 (de) * 1988-05-11 1989-11-23 Mathias Zirm Augenchirurgisches instrument
US5089007A (en) * 1990-02-14 1992-02-18 The University Of New Mexico Multipurpose surgical tool
ES2281103T3 (es) * 1996-07-01 2007-09-16 University Of Massachusetts Instrumentos quirurgicos minimamente invasivos montados en los extremos de unos dedos.
US6322578B1 (en) * 1997-07-14 2001-11-27 Heartport, Inc. Endoscopic microsurgical instruments
US6306155B1 (en) * 1999-10-25 2001-10-23 Becton, Dickinson And Company Capsulorhexis forceps and method of use
US6855156B2 (en) * 2000-10-19 2005-02-15 Grieshaber & Co. Ag Schaffhausen Ophthalmic microsurgical instrument

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See references of WO2009061194A1 *

Also Published As

Publication number Publication date
WO2009061194A1 (fr) 2009-05-14
NL1034657C2 (nl) 2009-05-11

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